<!-- <script setup>
// 引入echarts
import * as echarts from 'echarts';
import { onMounted } from 'vue';

onMounted(() => {
    // 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));
    // 绘制图表
    myChart.setOption({
        title: {
            text: 'ECharts 入门示例'
        },
        tooltip: {},
        xAxis: {
            data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
        },
        yAxis: {},
        series: [
            {
                name: '销量',
                type: 'bar',
                data: [5, 20, 36, 10, 10, 20]
            }
        ]
    });
})

</script> -->
<script>
    import * as echarts from 'echarts';
    export default{
        data(){
            return {
                myChart: null
            }
        },
        mounted(){
            this.myChart = echarts.init(
                document.getElementById('main')
                );
            // 绘制图表
            this.myChart.setOption({
                title: {
                    text: 'ECharts 入门示例'
                },
                tooltip: {},
                xAxis: {
                    data: ['衬衫', '羊毛衫', '雪纺衫', '裤子', '高跟鞋', '袜子']
                },
                yAxis: {},
                series: [
                    {
                        name: '销量',
                        type: 'bar',
                        data: [5, 20, 36, 10, 10, 20]
                    }
                ]
            });
        },
        methods: {
            changeTheme(){
                // 清空图图表的内容， 并且删除dom绑定
                this.myChart.dispose();
                this.myChart = echarts.init(
                    document.getElementById('main'),
                    'dark'
                );
                this.myChart.setOption({
                    title: {
                        text: 'ECharts 入门示例'
                    },
                    tooltip: {},
                    xAxis: {
                        data: ['衬衫', '衫', '雪纺衫', '子', '鞋', '袜子']
                    },
                    yAxis: {},
                    series: [
                        {
                            name: '销量',
                            type: 'bar',
                            data: [5, 20, 36, 10, 10, 20]
                        }
                    ]
                })
            }
        }
    }
</script>
<template>
    <div>
        <div id="main">

        </div>
        <el-button type="primary" @click="changeTheme()">
            改变主题
        </el-button>
    </div>
</template>

<style lang="scss">
#main {
    width: 1320px;
    height: 650px;
}
</style>